Electrical door operating device



April 25, 1933.

E. R. BEEMAN ELECTRICAL DOOR OPERATING DEVICE Filed May 14, 1928 a I o i u N U N i 4 Sheets-Sheet l Inventor:

E R-Beeman April 25, 1933. E. R. BEEMAN 1,905,126

ELECTRICAL DOOR OPERATING DEVICE Filed May 14, 1928 4 Sheets-Sheet 2 Inventor: E. 7? Beeman.

April 25, 1933. E.- R. BEEMAN ELECTRICAL DOOR OPERATING DEVICE Filed May 14, 1928 4 Sheets-Sheet 3 l I l l l lll. ||||Il \l Inventor E FBeemdn.

April 25, 1933. R, E N 1,905,126

v I ELECTRICAL DOOR OPERATING DEVICE Filed May 14, 1928 4 Sheets-Sheet 4 I Inven for: W E 7? Bee/nan.

B M/ W fitter/lays.

Patented Apr. 25, 1933 UNITED STATES EDWIN It. BEEMAN, or mnEAroL-Is, meson;

ELECTRICAL DOOR OPERATING DEVICE Application fiieana 14, 1928. Serial nmwmas.

My invention relates to electrical door operating devices, and an object of the invention is to provide a device of this character by means of which doors of buildings such as garages may be opened and closed upon the operationof a manually operable switch which may be located in any desired position as for instance in the house occupied by the user of the garage. A particular object is to provide a device embodying an electric motor in combination with a manuallyoperable switch and an automatically operated switch device, the arrangement being such that when the manual switch is placed in one position with the automatic switch device in a corresponding position, the doors will be moved toward open position, and when they reach such position, the; automatic switchdevice will be moved not only to cut off current from the motor but will be set in such position that current will be caused to pass through the motor to operate 1t n reverse direction when the manual switch is placed r in another position thereby closing the doors, upon completion of which operat1on the automatic switch device will be restored to original position so that current is aga n out off from the motor and the switch devlce s set for the door opening operat on such as first referred to above. Another ob ect. s to provide mechanical connections ot a simple and etficient character between the motor and the doors for opening and closing the. latter according to the direction 0t rotatlon of the motor, these connections being read ly dlsconnectable so that if the dev ce should fail to function properly, then the doors may be opened and closed manually. 1

The full objects and advantages of my 1nvention will appear in connectionwith the detailed description thereof, and the novel features of my inventive idea will be particularly pointed out in the cla1ms. 4 In the accompanying drawlngs which 1llustrate one'form in which myinvention may be embodied l V I;

Fig. 1 is a top plan view of the device showing it connected for operating doors of a building. Fig. 2 is a, side elevational vlew of the device. Fig. 3 is a side elevational View on an enlarged scale of the motor and gearing'driven thereby. Fig. 4 is a view in section on the line 4 4 of F ig. 3. Fig. 5 is a top plan view or a switch device. Fig.6 is a View in section .on the line 66 of Fig.1-5. Fig. 7 is a wiring diagram showing the set,- tlng for. opening doors. Fig. 8 is atwiring diagram showing the setting for closing doors. r i 6 Referring to the particular construction 2 .9 shown inthe drawings, it will be seen that there area number of supporting beams .or cross members 10, 12, 14 and 16, which are located in the building at a height coresponding approximately to the upper end ofthe .5 doors which are to be operated. The members 10andl-2 support depending guides 18 and 20 in which an elongated member shown as the tube 22 is slidably mounted. This tube at its upper sideis provided with a rod 37 24 which extends between enlargements26 and 28 on the endsof the tube 22. The rod'24 acts as a truss rod .toprevent sagging of the tube. The rod 24 carries two collars 30 and 32 for a purpose which will appear later. The underside of the tube 22 is provided with rack teeth 34 which are engaged bythe teeth of a pinion36 secured. to one end of :a transverse shaft 38, the other end of which carries a wormgear 40 meshing with a worm 42 secured to theshaft 44 ofan electric motor 46. Theworm and worm gear obviously constitute a reduction gearing. The motor and a bracket 48 are secured to the underside of'th'e supports 14 and 16. The bracket 48 carries the gearing just referred to and also carries an additional guide 50 for the slidable tube 22 as best shown in Fig. 4; In the embodiment shown in the drawings, the enlargement 28 e carries a cross bar- 52, the ends of which are connected by links 54 and 56 to the doors D of thegarage or building. fThe links 54 and 56 "have downturned ends which fit into holes in may be readily detached so that the doors may "be operated manually if for any reason the deviceshould fail to operate properly. Itis evident that when the rack is moved into its forward position as shown in Figs. 1 and 2, the doors will be opened and it will be understood that when the rack is moved rearwardly, the doors will be closed. The beams 12 and 14 are connected by a short member 62 to whichga bracket 64 is secured. This bracket carries a plate 66 of insulating material such as fiber. Secured to one side of the plate 66, there are three spring contact fingers 68, 70 and 72. The fingcr' 70 is connected to a return wire 74 while the fingers 68 and 72 are both connected to a wire 76 extending to a contact post 78 adapted t'o be engaged by a movable switch member 80. The switch member 80 is also adapted to be engaged with a contact post 82 when moved from engagement with the post 7 8. The manually operable switch embodying the movable member 80 may be placed in any convenient location as inside of a house or any other suitable place outside the garage having the doors which are to be controlled. The post 82 is connectnected to a contact finger 96.

ed by a wire 84 with a contact finger 86 carried by the plate 66. The motor 46 has a winding 88, one'end of which is connected toa contact finger 90 and the other end of which is connected to a double contact finger 92. The motor 46 has a second winding 94, one end of which is connected to the return wire 74 and the other end of which is con- The contact finger 96 is connected by a wire 98 with a contact finger 1'00 and is connected by awire 102 with a contact finger 104. The post 90 is connected by a wire 106. with a con- "tact finger 108. A contactfinoer 110 is connected by a wire 112 with the return wire 74,

it being understood that all of these contact fingers are carried by the plate 66 and are arranged in the manner shown in Figs. 7 and 8. Aswitch arm 114 is pivotally mounted on a rod 116 carried by the bracket 64 as shown in Figs. 5 and 6. The arm 114 carries an insulating block 118 in which four contact plates 120, 122,124, and 126 are set. Assuming that the doors are closed and it is desired to bring them into the open position shown in Fig. 1, the switch member 80 is moved into the position shown in Fig. 7 so as to engage the post 78. The switch arm 114 at this time is in such position that the plate 120 bridges the fingers 72 and 100, the plate 122 bridges the fingers and 92 while the plate 124 bridges the fingers 68 and 108. Current will now flow from the feed wire 128 in the direc- :tion indicated by the arrows through the-wire 76, plate 120, wire 98 and motor winding 94 to the return wire 74.v Current will also flow from the wire 76 through the plate 124, wire -106, motor winding 88 and plate 122 to the return wire 74. The motor is thus turned this position, the collar 30 on the rod 24 en gages a trip arm 130 which is pivoted on the rod 116. The arm 130 is connected to the switch arm 114 by a coiled spring132 so that as soon as the arm 130 has passed dead center, the spring 132 moves the arm 114 into the position shown in Figs. 5 and 8 with a quick snappy action. this-action cut off since it cannot now flow through the wire 7 6. Therefore, the doors will remain in open position until the movable switch member 80 is moved into the position shown in Fig. 8 in contact with the post 82. Current will now flow through the wire 84 and plate 120 to the finger 96 where the currentdivides, one part going through the" motor winding 94 "to the return wire 74 and the other part going through the wire 102, plate 122, motor winding '88, plate 126 and wire 112 to the return wire 74.' The motor is thus again rotated "but in the reverse direction from that previously referred to so that the rack 34 is retracted to close the doors. Just as they are reaching their closed'position, the collar 32 on the rod 24 engages the trip arm 130 and throws the switch arm back into the position shown in Fig. 7 The motor is now stopped since no current can flow through the wire 84. The doors'will remain in closed position until the movable switch member 80 is moved manually into the position shown'in Fig. 7 whereupon the door opening operation will berepeated'since the contact plates 1 20, 122, and 124 have already been automatically placed in proper position for this operation. 7

I claim: p I

1.' A door operating device comprising an overhead support, rounded guides extending downwardly from said support, an elongated cylindricalmember slidably mounted insaid guides, rack. teeth carried by the underside of said member, a pinion meshing with said teeth, a motor adapted to drive said pinion in opposite directions for reciprocating said cylindrical member, and connections between said cylindrical member and the doors for opening and closing the latter. a

2. Adoor operating device comprising an overhead support, rounded guides extending downwardly from said support havin openings in their lower sides, anelongated cylindrical member slidably mounted in said guides, rack teeth extending down'from the lower side of said cylindrical member 'nect-ions between said cylindrical member and the doors for opening and closing the latter. 1 V

3. A door operating device comprising an Current to the motor is by I overhead support, rounded guides extending downwardly from said support, a tube slidably mounted in said ides, a truss rod above the upper side of sald tube connecting the ends thereof, rack teeth carried by the underside of said tube, a pinion meshing with said teeth, a motor adapted to drive said pinion in opposite directions for reciprocating said tube, and connections between said tube and the doors for opening and closing the latter.

4. A door operating device comprisin an overhead support, rounded guides extending downwardly from said support, a tube slidably mounted in said guides, a truss rod above the upper side of said tube connecting the ends thereof, rack teeth carried by the underside of said tube, a pinion meshing with said teeth, a motor adapted to drive said pinion, a switch for reversing the direction of rotation of said motor, two spaced enlargements carried by said rod for alternately throwing said switch reversely, and connections between said tube and the doors for opening and closing the latter.

5. A door operating device comprising an overhead support, rounded guides extending downwardly from said support, a tube slidably mounted in said guides, a truss rod above the upper side of said tube connecting the ends thereof, rack teeth carried by the underside of said tube, a pinion meshing with said teeth, a motor adapted to drive said pinion, a switch for reversing the direction of rotation of said motor, a trip arm, a stressing device cooperating with said trip arm and said switch, said stressing device causing said switch to move from one position to the other when said trip arm passes over dead center, two spaced enlargements carried by said truss rod for alternately engaging op posite sides of said trip arm, and connections between said tube and the doors for opening and closing the latter.

In testimony whereof I hereunto afiix my signature.

EDWIN R. BEEMAN. 

